Differential carrier



Oct. 20, 1931. H; D. CHURCH 1,828,025

DIFFERENTIAL GARRI ER Filed March 2o, 1930 2 sheets-sheet 1 /A FOLD CHURCH Oct. 20, 1931. H. D. CHURCH 1,823,025

DIFFERENTIAL CARRIER F'iled March 20, 1930 2 Sheets-Sheet 2 gwvzntoz HA FOL CHURCH Patented st,. 1931 raras PATENT ori-ien COMPANY, OF CLEVELAND, OHIO, AACVORPORATION OF OHIO :DVAIFERENTIAL CARRIER.

Appiicafion mea March 2o, 1930. serial No. 437,528.

This invention relates to Vmotor vehicles, and particularly to differential carrlers to support a Vdifferential in the reargaxle housject is to constructthev differential carrier in such a manner as to facilitate assembly and servicing. Other objects relating to details of construction and economies of manufacture will appear inthefollowing specica-V tion. j

In the accompanying'drawings, which illustrate a preferred embodiment of the 1nvention: f

Fig. 1 isa horizontal section through a rear i axle housing and diierential, showing a differential carrier constructed in accordance with this invention. y Y Fig. 2 is a view partly in section and partly in elevation taken on the line 2-2 of Fig. 1 looking in the direction of the arrows.

Referring to the drawings, the numeral 5 designates a rear axle housing of the banjo type. This housing consists of a vhomogeneous member having an enlarged central portion with an opening 6 inthe front side thereof and tubular extensions 7 enclosing the rear axle shafts 8. The opening 6 is closed by a diferential carrier 9 which consists of a frusto-conoidal member having an annular flange 1() bolted to the housingvaround the opening 6, and terminating at its smaller end in an inwardly directed flange 11.' A bearing cage 12 is bolted to the flange 11 and encloses thebearings 13 for the stub shaft 14. The latter is arranged to be connected to the propeller shaft of the vehicle Vand carries on its l inner end the main drivepinion 15. u

Bearing hangers 16 are cast integral with Y the diiferentialcarrier 9 and project into the housing 5. Each hanger 16 is formed with Va semi-circular recess 17 to receivel the roller bearings 18.l The ldifferential 19, which is oi? the conventionaltypa is supported by rotation bythe two sets of bearings 18. 1

HAROLD D. CHURCH, OF CLEVELAND HEIGHTS, OHIO,VASSIG1\TOR TO THE WHITE. MOTOR Bearing caps 20 are secured to the hangers 16 by bolts 21 which extend to the `outer surface of the carrier 9 through apertured bosses 22. The capsy 2O are formed withrecesses complementalto "therecesses 17, and complete the vsupports for the bearingsl 18. The hangers 16 and caps 20are provided with mating threads to receive adjusting nuts 23 which position the differential 19laterally with respect to lthe carrier 9 to insure "accurate meshingofl the ring gear 24 drive pinion 15.

yThe axle housingV 5 is provided with a y with the Vpair of `bosses 25 inalinement with the bearinghangers 16. Thebosses25 are formed with openings 26 which receive dowelpins27 with a driving fit. Recesses 28are'formed in extensions ofthe bearing caps 20in axial a'linement with `the openings 26 lto slidably receive the inner ends' off the'dowel pins 27 and thereby Vbrace thefdifferential carrier 9 and the bearing hangersl from the rear y wall of the axlehousing 5.

In, assemblingl the device, the differential 19, bearings 18, and bearing caps 20 are as#l sembled with the differential carrier 9. The stub shaft 14 and associated partsare assembled with the bearing cage 12 which is bolted to the carrier-9.A The dowel pins 27 are driven into the openings 26, and the entire diferentialassembly is inserted into ythe axle, housing 5 through thefopening 6,'*the e pins 27 entering therecesses 28. rThe flange 10 is then bolted to the axle housing and the axleshafts 8 are inserted throughfthe-tubular extensions 7. It will be evident that the engagement of thel pins27` in the' recesses 28 1 insures accurate alinementvof the facilitates the assembly.

In operation, the drive pinion 1 5 isrotat'ed by the engine through. thel transmission land propeller shaft and rotates-the differential assembly'through its engagement with the ring gear'24. Thev force applied t0 thek ring gear 24 bythe drive pinion 15 places a directv verti cal load onthe bearings 18. Inasmuch as this load acts` in the planes ofthe hangers 16,`the

latter are capable of-effectively withstanding i097 55 in said closure, saidclosure being adapted to be: secured to said hanger to engage said the sam-e. In addition, however, the Wedging action between the teeth of the pinion v 15 and the ring gear 24 creates a couple tending to rotate the entire diierential about a vertical axis. This force is transmitted by the bearings 18 to the hangers 16, and tends to spread the same laterally., In practice, it

is found that this force tends to break the n hangers from the carrier 9V unless the parts `are made of such proportionsas to Vbe un-A Wieldy and impractical. The-doivel pins 2'?" transmit these lateral forces to theaxle housing 5, and in addition dampen all -tendencies Y of the differential carrier toward vibration induced by sudden applications of power.

AlthoughV the foregoing description is necessarilyof a detailed characterin order thatthe invention may be fully disclosed, it

is te be understood.thatthespecific termil nelogy is not to be construedas restrictive or limiting, and it is Vtoabe further understood that various modifications and rearrangements, of partsinay be-resorted tovvithout departing from the scope and spirit of the invention asf denedin the following claims. claim: Y Y Y Y Y In a motor vehicle, the combination With an axle housing having a front Wall provided Withan opening therethrough anda solid l rear Wall, a boss integrally formed in said rear vvall'opposite said opening, a doWel pin projecting from and reinforced by said boss, a closurefor saidY opening having,y a hanger, a differential supported by` said hanger, and a driveshaftassembled in said closure, said closure being adapted to be secured torsaid housing with said hanger slidably engaging said doWel pin.

2,. In -a motor vehicle, the combination With an axle housinghaving an opening and a pair of d oWel pins opposite said opening, of a closure for, said opening having a pair of hangers, a differential assembled in said hangers,1and a drive shaft assembled in said closure, said closure being adapted to be secured to said housing With4 said hangers engaging said doWel pins. Y

3.,In a motor vehicle, the combination With an axle housing having an opening in theffront Wall thereof, of a pair of parallel doivel. pins opposite said opening, a closure for saidopening having fa pair ofhangers projecting into same, adiiferentialassembled in said hangers anda drive shaft assembled lovslrrL.Y i f i -i y In testimony whereof I hereunto alix my signature-'this '14th: dayl of March, 1930.

HanoLnn. oHURoI-r. f 

